2 is a number which happens many times.
- After the Theta striked Bravo, only 2 Bravo members were left. Michel and Ethan.
- After the Theta striked Delta, only 2 Delta members were left. Chew and Ethan.
- All Quick Response groups are in pairs of 2.
- 2 Black OPS interigate the Quick Response member in a Lower Level section and then kill him and are killed by Ethan and the Quick Response member opens the door and falls dead.
- 2 HazMat members were infected, Michel and Ethan.
- Only 2 Delta members are known, Chew and Marco.
, Adds up to six times.